Piston lower crown



FIG. 1 is a perspective view of the piston lower crown;

FIG. 2 is a side view of the piston lower crown looking transversely to a pin bore axis;

FIG. 3 is front view of the piston lower crown looking along the pin bore axis; and,

FIG. 4 is a bottom view of the piston lower crown.

The broken line portions of the piston are for the purpose of illustrating environmental piston structure and forms no part of the claimed design. 

We claim the ornamental design for a piston lower crown, as shown and described. 